Home / 685,789.89-946,380.05-379,865.27

Finding the Fourth Proportional to 685,789.89, 946,380.05 and 379,865.27

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Solution

The fourth proportional to 685,789.89, 946,380.05 and 379,865.27 is: 524,208.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,789.89 : 946,380.05 = 379,865.27 : x
  2. Step 2: Convert to fraction form
    685,789.89/946,380.05 = 379,865.27/x
  3. Step 3: Cross multiply
    685,789.89x = 946,380.05 × 379,865.27
  4. Step 4: Simplify right side
    685,789.89x = 359,496,914,582.03
  5. Step 5: Solve for x
    x = 359,496,914,582.03/685,789.89
  6. Step 6: Final answer
    x = 524,208.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.